internal unsafe VBoxUSB(USBRegistry devreg)
{
this.Registry = devreg;
hDev = Kernel32.CreateFile(devreg.DevicePath, Kernel32.GENERIC_READ | Kernel32.GENERIC_WRITE, Kernel32.FILE_SHARE_WRITE | Kernel32.FILE_SHARE_READ, IntPtr.Zero, Kernel32.OPEN_EXISTING, Kernel32.FILE_ATTRIBUTE_SYSTEM | Kernel32.FILE_FLAG_OVERLAPPED, IntPtr.Zero);
if (hDev.IsInvalid)
{
throw new Win32Exception();
}
try {
USBSUP_VERSION version = new USBSUP_VERSION();
SyncIoControl(hDev, SUPUSB_IOCTL_GET_VERSION, null, 0, &version, sizeof(USBSUP_VERSION));
if (version.u32Major != USBDRV_MAJOR_VERSION || version.u32Minor < USBDRV_MINOR_VERSION)
{
throw new InvalidOperationException("Unsupported USBDRV version");
}
USBSUP_CLAIMDEV claim = new USBSUP_CLAIMDEV()
{
bInterfaceNumber = 0
};
SyncIoControl(hDev, SUPUSB_IOCTL_USB_CLAIM_DEVICE, &claim, sizeof(USBSUP_CLAIMDEV), &claim, sizeof(USBSUP_CLAIMDEV));
if (claim.fClaimed == 0)
{
throw new InvalidOperationException("Claim failed");
}
} catch {
hDev.Close();
throw;
}
}
protected unsafe override void Dispose(Boolean disposing)
{
if (!disposing)
{
return;
}
if (!hDev.IsInvalid && !hDev.IsClosed)
{
USBSUP_CLAIMDEV release = new USBSUP_CLAIMDEV()
{
bInterfaceNumber = bInterfaceNumber
};
SyncIoControl(hDev, SUPUSB_IOCTL_USB_RELEASE_DEVICE, &release, sizeof(USBSUP_CLAIMDEV), null, 0, false);
}
hDev.Close();
}